1 /* 2 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include "precompiled.hpp" 25 #include "asm/register.hpp" 26 #include "classfile/vmSymbols.hpp" 27 #include "code/compiledIC.hpp" 28 #include "code/vmreg.inline.hpp" 29 #include "compiler/compileBroker.hpp" 30 #include "compiler/disassembler.hpp" 31 #include "jvmci/jvmciEnv.hpp" 32 #include "jvmci/jvmciCompiler.hpp" 33 #include "jvmci/jvmciCodeInstaller.hpp" 34 #include "jvmci/jvmciJavaClasses.hpp" 35 #include "jvmci/jvmciCompilerToVM.hpp" 36 #include "jvmci/jvmciRuntime.hpp" 37 #include "memory/allocation.inline.hpp" 38 #include "oops/arrayOop.inline.hpp" 39 #include "oops/oop.inline.hpp" 40 #include "oops/objArrayOop.inline.hpp" 41 #include "oops/typeArrayOop.inline.hpp" 42 #include "runtime/interfaceSupport.inline.hpp" 43 #include "runtime/javaCalls.hpp" 44 #include "runtime/jniHandles.inline.hpp" 45 #include "runtime/safepointMechanism.inline.hpp" 46 #include "runtime/sharedRuntime.hpp" 47 #include "utilities/align.hpp" 48 49 // frequently used constants 50 // Allocate them with new so they are never destroyed (otherwise, a 51 // forced exit could destroy these objects while they are still in 52 // use). 53 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL); 54 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1); 55 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue((jint)0); 56 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1); 57 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2); 58 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location()); 59 60 Method* getMethodFromHotSpotMethod(oop hotspot_method) { 61 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity"); 62 return CompilerToVM::asMethod(hotspot_method); 63 } 64 65 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) { 66 if (location.is_null()) { 67 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 68 } 69 70 Handle reg(THREAD, code_Location::reg(location)); 71 jint offset = code_Location::offset(location); 72 73 if (reg.not_null()) { 74 // register 75 jint number = code_Register::number(reg); 76 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL); 77 if (offset % 4 == 0) { 78 return vmReg->next(offset / 4); 79 } else { 80 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset); 81 } 82 } else { 83 // stack slot 84 if (offset % 4 == 0) { 85 VMReg vmReg = VMRegImpl::stack2reg(offset / 4); 86 if (!OopMapValue::legal_vm_reg_name(vmReg)) { 87 // This restriction only applies to VMRegs that are used in OopMap but 88 // since that's the only use of VMRegs it's simplest to put this test 89 // here. This test should also be equivalent legal_vm_reg_name but JVMCI 90 // clients can use max_oop_map_stack_stack_offset to detect this problem 91 // directly. The asserts just ensure that the tests are in agreement. 92 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg"); 93 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)", 94 offset, CompilerToVM::Data::max_oop_map_stack_offset()); 95 } 96 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg"); 97 return vmReg; 98 } else { 99 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset); 100 } 101 } 102 } 103 104 objArrayOop CodeInstaller::sites() { 105 return (objArrayOop) JNIHandles::resolve(_sites_handle); 106 } 107 108 arrayOop CodeInstaller::code() { 109 return (arrayOop) JNIHandles::resolve(_code_handle); 110 } 111 112 arrayOop CodeInstaller::data_section() { 113 return (arrayOop) JNIHandles::resolve(_data_section_handle); 114 } 115 116 objArrayOop CodeInstaller::data_section_patches() { 117 return (objArrayOop) JNIHandles::resolve(_data_section_patches_handle); 118 } 119 120 #ifndef PRODUCT 121 objArrayOop CodeInstaller::comments() { 122 return (objArrayOop) JNIHandles::resolve(_comments_handle); 123 } 124 #endif 125 126 oop CodeInstaller::word_kind() { 127 return JNIHandles::resolve(_word_kind_handle); 128 } 129 130 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo 131 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) { 132 Handle reference_map(THREAD, DebugInfo::referenceMap(debug_info)); 133 if (reference_map.is_null()) { 134 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 135 } 136 if (!reference_map->is_a(HotSpotReferenceMap::klass())) { 137 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name()); 138 } 139 if (!_has_wide_vector && SharedRuntime::is_wide_vector(HotSpotReferenceMap::maxRegisterSize(reference_map))) { 140 if (SharedRuntime::polling_page_vectors_safepoint_handler_blob() == NULL) { 141 JVMCI_ERROR_NULL("JVMCI is producing code using vectors larger than the runtime supports"); 142 } 143 _has_wide_vector = true; 144 } 145 OopMap* map = new OopMap(_total_frame_size, _parameter_count); 146 objArrayHandle objects(THREAD, HotSpotReferenceMap::objects(reference_map)); 147 objArrayHandle derivedBase(THREAD, HotSpotReferenceMap::derivedBase(reference_map)); 148 typeArrayHandle sizeInBytes(THREAD, HotSpotReferenceMap::sizeInBytes(reference_map)); 149 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) { 150 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 151 } 152 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) { 153 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length()); 154 } 155 for (int i = 0; i < objects->length(); i++) { 156 Handle location(THREAD, objects->obj_at(i)); 157 Handle baseLocation(THREAD, derivedBase->obj_at(i)); 158 int bytes = sizeInBytes->int_at(i); 159 160 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL); 161 if (baseLocation.not_null()) { 162 // derived oop 163 #ifdef _LP64 164 if (bytes == 8) { 165 #else 166 if (bytes == 4) { 167 #endif 168 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL); 169 map->set_derived_oop(vmReg, baseReg); 170 } else { 171 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes); 172 } 173 #ifdef _LP64 174 } else if (bytes == 8) { 175 // wide oop 176 map->set_oop(vmReg); 177 } else if (bytes == 4) { 178 // narrow oop 179 map->set_narrowoop(vmReg); 180 #else 181 } else if (bytes == 4) { 182 map->set_oop(vmReg); 183 #endif 184 } else { 185 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes); 186 } 187 } 188 189 Handle callee_save_info(THREAD, (oop) DebugInfo::calleeSaveInfo(debug_info)); 190 if (callee_save_info.not_null()) { 191 objArrayHandle registers(THREAD, RegisterSaveLayout::registers(callee_save_info)); 192 typeArrayHandle slots(THREAD, RegisterSaveLayout::slots(callee_save_info)); 193 for (jint i = 0; i < slots->length(); i++) { 194 Handle jvmci_reg (THREAD, registers->obj_at(i)); 195 jint jvmci_reg_number = code_Register::number(jvmci_reg); 196 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL); 197 // HotSpot stack slots are 4 bytes 198 jint jvmci_slot = slots->int_at(i); 199 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word; 200 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot); 201 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg); 202 #ifdef _LP64 203 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp) 204 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1); 205 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next()); 206 #endif 207 } 208 } 209 return map; 210 } 211 212 #if INCLUDE_AOT 213 AOTOopRecorder::AOTOopRecorder(Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) { 214 _meta_refs = new GrowableArray<jobject>(); 215 } 216 217 int AOTOopRecorder::nr_meta_refs() const { 218 return _meta_refs->length(); 219 } 220 221 jobject AOTOopRecorder::meta_element(int pos) const { 222 return _meta_refs->at(pos); 223 } 224 225 int AOTOopRecorder::find_index(Metadata* h) { 226 JavaThread* THREAD = JavaThread::current(); 227 int oldCount = metadata_count(); 228 int index = this->OopRecorder::find_index(h); 229 int newCount = metadata_count(); 230 231 if (oldCount == newCount) { 232 // found a match 233 return index; 234 } 235 236 vmassert(index + 1 == newCount, "must be last"); 237 238 JVMCIKlassHandle klass(THREAD); 239 oop result = NULL; 240 guarantee(h != NULL, 241 "If DebugInformationRecorder::describe_scope passes NULL oldCount == newCount must hold."); 242 if (h->is_klass()) { 243 klass = (Klass*) h; 244 result = CompilerToVM::get_jvmci_type(klass, CATCH); 245 } else if (h->is_method()) { 246 Method* method = (Method*) h; 247 methodHandle mh(method); 248 result = CompilerToVM::get_jvmci_method(method, CATCH); 249 } 250 jobject ref = JNIHandles::make_local(THREAD, result); 251 record_meta_ref(ref, index); 252 253 return index; 254 } 255 256 int AOTOopRecorder::find_index(jobject h) { 257 if (h == NULL) { 258 return 0; 259 } 260 oop javaMirror = JNIHandles::resolve(h); 261 Klass* klass = java_lang_Class::as_Klass(javaMirror); 262 return find_index(klass); 263 } 264 265 void AOTOopRecorder::record_meta_ref(jobject o, int index) { 266 assert(index > 0, "must be 1..n"); 267 index -= 1; // reduce by one to convert to array index 268 269 assert(index == _meta_refs->length(), "must be last"); 270 _meta_refs->append(o); 271 } 272 #endif // INCLUDE_AOT 273 274 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) { 275 /* 276 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base 277 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers, 278 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the 279 * base class (Metadata* or MetaspaceObj*). 280 */ 281 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant); 282 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) { 283 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj)); 284 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass)); 285 int index = _oop_recorder->find_index(klass); 286 section->relocate(dest, metadata_Relocation::spec(index)); 287 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string()); 288 return klass; 289 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) { 290 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj); 291 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method)); 292 int index = _oop_recorder->find_index(method); 293 section->relocate(dest, metadata_Relocation::spec(index)); 294 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string()); 295 return method; 296 } else { 297 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name()); 298 } 299 } 300 301 #ifdef _LP64 302 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) { 303 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant); 304 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer"); 305 306 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) { 307 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name()); 308 } 309 310 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj)); 311 int index = _oop_recorder->find_index(klass); 312 section->relocate(dest, metadata_Relocation::spec(index)); 313 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string()); 314 return Klass::encode_klass(klass); 315 } 316 #endif 317 318 Location::Type CodeInstaller::get_oop_type(Thread* thread, Handle value) { 319 Handle valueKind(thread, Value::valueKind(value)); 320 Handle platformKind(thread, ValueKind::platformKind(valueKind)); 321 322 if (platformKind == word_kind()) { 323 return Location::oop; 324 } else { 325 return Location::narrowoop; 326 } 327 } 328 329 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) { 330 second = NULL; 331 if (value.is_null()) { 332 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 333 } else if (value == Value::ILLEGAL()) { 334 if (type != T_ILLEGAL) { 335 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type)); 336 } 337 return _illegal_value; 338 } else if (value->is_a(RegisterValue::klass())) { 339 Handle reg(THREAD, RegisterValue::reg(value)); 340 jint number = code_Register::number(reg); 341 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL); 342 if (is_general_purpose_reg(hotspotRegister)) { 343 Location::Type locationType; 344 if (type == T_OBJECT) { 345 locationType = get_oop_type(THREAD, value); 346 } else if (type == T_LONG) { 347 locationType = Location::lng; 348 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) { 349 locationType = Location::int_in_long; 350 } else { 351 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type)); 352 } 353 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister)); 354 if (type == T_LONG) { 355 second = value; 356 } 357 return value; 358 } else { 359 Location::Type locationType; 360 if (type == T_FLOAT) { 361 // this seems weird, but the same value is used in c1_LinearScan 362 locationType = Location::normal; 363 } else if (type == T_DOUBLE) { 364 locationType = Location::dbl; 365 } else { 366 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type)); 367 } 368 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister)); 369 if (type == T_DOUBLE) { 370 second = value; 371 } 372 return value; 373 } 374 } else if (value->is_a(StackSlot::klass())) { 375 jint offset = StackSlot::offset(value); 376 if (StackSlot::addFrameSize(value)) { 377 offset += _total_frame_size; 378 } 379 380 Location::Type locationType; 381 if (type == T_OBJECT) { 382 locationType = get_oop_type(THREAD, value); 383 } else if (type == T_LONG) { 384 locationType = Location::lng; 385 } else if (type == T_DOUBLE) { 386 locationType = Location::dbl; 387 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) { 388 locationType = Location::normal; 389 } else { 390 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type)); 391 } 392 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset)); 393 if (type == T_DOUBLE || type == T_LONG) { 394 second = value; 395 } 396 return value; 397 } else if (value->is_a(JavaConstant::klass())) { 398 if (value->is_a(PrimitiveConstant::klass())) { 399 if (value->is_a(RawConstant::klass())) { 400 jlong prim = PrimitiveConstant::primitive(value); 401 return new ConstantLongValue(prim); 402 } else { 403 Handle primitive_constant_kind(THREAD, PrimitiveConstant::kind(value)); 404 BasicType constantType = JVMCIRuntime::kindToBasicType(primitive_constant_kind, CHECK_NULL); 405 if (type != constantType) { 406 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType)); 407 } 408 if (type == T_INT || type == T_FLOAT) { 409 jint prim = (jint)PrimitiveConstant::primitive(value); 410 switch (prim) { 411 case -1: return _int_m1_scope_value; 412 case 0: return _int_0_scope_value; 413 case 1: return _int_1_scope_value; 414 case 2: return _int_2_scope_value; 415 default: return new ConstantIntValue(prim); 416 } 417 } else if (type == T_LONG || type == T_DOUBLE) { 418 jlong prim = PrimitiveConstant::primitive(value); 419 second = _int_1_scope_value; 420 return new ConstantLongValue(prim); 421 } else { 422 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type)); 423 } 424 } 425 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) { 426 if (type == T_OBJECT) { 427 return _oop_null_scope_value; 428 } else { 429 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type)); 430 } 431 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) { 432 if (type == T_OBJECT) { 433 oop obj = HotSpotObjectConstantImpl::object(value); 434 if (obj == NULL) { 435 JVMCI_ERROR_NULL("null value must be in NullConstant"); 436 } 437 return new ConstantOopWriteValue(JNIHandles::make_local(obj)); 438 } else { 439 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type)); 440 } 441 } 442 } else if (value->is_a(VirtualObject::klass())) { 443 if (type == T_OBJECT) { 444 int id = VirtualObject::id(value); 445 if (0 <= id && id < objects->length()) { 446 ScopeValue* object = objects->at(id); 447 if (object != NULL) { 448 return object; 449 } 450 } 451 JVMCI_ERROR_NULL("unknown virtual object id %d", id); 452 } else { 453 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type)); 454 } 455 } 456 457 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name()) 458 } 459 460 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) { 461 // Might want a HandleMark here. 462 Handle type(THREAD, VirtualObject::type(value)); 463 int id = VirtualObject::id(value); 464 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type); 465 Klass* klass = java_lang_Class::as_Klass(javaMirror); 466 bool isLongArray = klass == Universe::longArrayKlassObj(); 467 468 objArrayHandle values(THREAD, VirtualObject::values(value)); 469 objArrayHandle slotKinds(THREAD, VirtualObject::slotKinds(value)); 470 for (jint i = 0; i < values->length(); i++) { 471 HandleMark hm(THREAD); 472 ScopeValue* cur_second = NULL; 473 Handle object(THREAD, values->obj_at(i)); 474 Handle slot_kind (THREAD, slotKinds->obj_at(i)); 475 BasicType type = JVMCIRuntime::kindToBasicType(slot_kind, CHECK); 476 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK); 477 478 if (isLongArray && cur_second == NULL) { 479 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations. 480 // add an int 0 constant 481 cur_second = _int_0_scope_value; 482 } 483 484 if (cur_second != NULL) { 485 sv->field_values()->append(cur_second); 486 } 487 assert(value != NULL, "missing value"); 488 sv->field_values()->append(value); 489 } 490 } 491 492 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) { 493 if (value.is_null()) { 494 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 495 } 496 if (!value->is_a(StackLockValue::klass())) { 497 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name()); 498 } 499 500 ScopeValue* second = NULL; 501 Handle stack_lock_owner(THREAD, StackLockValue::owner(value)); 502 ScopeValue* owner_value = get_scope_value(stack_lock_owner, T_OBJECT, objects, second, CHECK_NULL); 503 assert(second == NULL, "monitor cannot occupy two stack slots"); 504 505 Handle stack_lock_slot(THREAD, StackLockValue::slot(value)); 506 ScopeValue* lock_data_value = get_scope_value(stack_lock_slot, T_LONG, objects, second, CHECK_NULL); 507 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots"); 508 assert(lock_data_value->is_location(), "invalid monitor location"); 509 Location lock_data_loc = ((LocationValue*)lock_data_value)->location(); 510 511 bool eliminated = false; 512 if (StackLockValue::eliminated(value)) { 513 eliminated = true; 514 } 515 516 return new MonitorValue(owner_value, lock_data_loc, eliminated); 517 } 518 519 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) { 520 JavaThread* thread = JavaThread::current(); 521 assert(THREAD == thread, ""); 522 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL; 523 _oop_recorder = recorder; 524 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL); 525 objArrayHandle assumptions(THREAD, HotSpotCompiledCode::assumptions(compiled_code)); 526 if (!assumptions.is_null()) { 527 int length = assumptions->length(); 528 for (int i = 0; i < length; ++i) { 529 Handle assumption(THREAD, assumptions->obj_at(i)); 530 if (!assumption.is_null()) { 531 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) { 532 assumption_NoFinalizableSubclass(THREAD, assumption); 533 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) { 534 assumption_ConcreteSubtype(THREAD, assumption); 535 } else if (assumption->klass() == Assumptions_LeafType::klass()) { 536 assumption_LeafType(THREAD, assumption); 537 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) { 538 assumption_ConcreteMethod(THREAD, assumption); 539 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) { 540 assumption_CallSiteTargetValue(THREAD, assumption); 541 } else { 542 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name()); 543 } 544 } 545 } 546 } 547 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { 548 objArrayHandle methods(THREAD, HotSpotCompiledCode::methods(compiled_code)); 549 if (!methods.is_null()) { 550 int length = methods->length(); 551 for (int i = 0; i < length; ++i) { 552 Handle method_handle(THREAD, methods->obj_at(i)); 553 methodHandle method = getMethodFromHotSpotMethod(method_handle()); 554 _dependencies->assert_evol_method(method()); 555 } 556 } 557 } 558 } 559 560 #if INCLUDE_AOT 561 RelocBuffer::~RelocBuffer() { 562 if (_buffer != NULL) { 563 FREE_C_HEAP_ARRAY(char, _buffer); 564 } 565 } 566 567 address RelocBuffer::begin() const { 568 if (_buffer != NULL) { 569 return (address) _buffer; 570 } 571 return (address) _static_buffer; 572 } 573 574 void RelocBuffer::set_size(size_t bytes) { 575 assert(bytes <= _size, "can't grow in size!"); 576 _size = bytes; 577 } 578 579 void RelocBuffer::ensure_size(size_t bytes) { 580 assert(_buffer == NULL, "can only be used once"); 581 assert(_size == 0, "can only be used once"); 582 if (bytes >= RelocBuffer::stack_size) { 583 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal); 584 } 585 _size = bytes; 586 } 587 588 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) { 589 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata"); 590 jobject compiled_code_obj = JNIHandles::make_local(compiled_code()); 591 AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true); 592 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK); 593 594 metadata.set_oop_recorder(recorder); 595 596 // Get instructions and constants CodeSections early because we need it. 597 _instructions = buffer.insts(); 598 _constants = buffer.consts(); 599 buffer.set_immutable_PIC(_immutable_pic_compilation); 600 601 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK); 602 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, false, CHECK_OK); 603 if (result != JVMCIEnv::ok) { 604 return result; 605 } 606 607 _debug_recorder->pcs_size(); // create the sentinel record 608 609 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2"); 610 611 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length()); 612 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size()); 613 metadata.set_exception_table(&_exception_handler_table); 614 615 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer(); 616 617 reloc_buffer->ensure_size(buffer.total_relocation_size()); 618 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true); 619 reloc_buffer->set_size(size); 620 return JVMCIEnv::ok; 621 } 622 #endif // INCLUDE_AOT 623 624 // constructor used to create a method 625 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) { 626 CodeBuffer buffer("JVMCI Compiler CodeBuffer"); 627 jobject compiled_code_obj = JNIHandles::make_local(compiled_code()); 628 OopRecorder* recorder = new OopRecorder(&_arena, true); 629 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK); 630 631 // Get instructions and constants CodeSections early because we need it. 632 _instructions = buffer.insts(); 633 _constants = buffer.consts(); 634 #if INCLUDE_AOT 635 buffer.set_immutable_PIC(_immutable_pic_compilation); 636 #endif 637 638 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK); 639 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, true, CHECK_OK); 640 if (result != JVMCIEnv::ok) { 641 return result; 642 } 643 644 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words 645 646 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) { 647 oop stubName = HotSpotCompiledCode::name(compiled_code_obj); 648 if (stubName == NULL) { 649 JVMCI_ERROR_OK("stub should have a name"); 650 } 651 char* name = strdup(java_lang_String::as_utf8_string(stubName)); 652 cb = RuntimeStub::new_runtime_stub(name, 653 &buffer, 654 CodeOffsets::frame_never_safe, 655 stack_slots, 656 _debug_recorder->_oopmaps, 657 false); 658 result = JVMCIEnv::ok; 659 } else { 660 nmethod* nm = NULL; 661 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code)); 662 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code); 663 jint id = HotSpotCompiledNmethod::id(compiled_code); 664 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE; 665 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code); 666 if (id == -1) { 667 // Make sure a valid compile_id is associated with every compile 668 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci); 669 } 670 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer, 671 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table, 672 compiler, _debug_recorder, _dependencies, env, id, 673 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log); 674 cb = nm->as_codeblob_or_null(); 675 if (nm != NULL && env == NULL) { 676 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler); 677 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption; 678 if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) { 679 nm->print_nmethod(printnmethods); 680 } 681 DirectivesStack::release(directive); 682 } 683 } 684 685 if (cb != NULL) { 686 // Make sure the pre-calculated constants section size was correct. 687 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size); 688 } 689 return result; 690 } 691 692 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) { 693 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) { 694 Handle hotspotJavaMethod(THREAD, HotSpotCompiledNmethod::method(compiled_code)); 695 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod()); 696 _parameter_count = method->size_of_parameters(); 697 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string()); 698 } else { 699 // Must be a HotSpotCompiledRuntimeStub. 700 // Only used in OopMap constructor for non-product builds 701 _parameter_count = 0; 702 } 703 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code)); 704 705 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code)); 706 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code); 707 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code); 708 709 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code); 710 if (deoptRescueSlot == NULL) { 711 _orig_pc_offset = -1; 712 } else { 713 _orig_pc_offset = StackSlot::offset(deoptRescueSlot); 714 if (StackSlot::addFrameSize(deoptRescueSlot)) { 715 _orig_pc_offset += _total_frame_size; 716 } 717 if (_orig_pc_offset < 0) { 718 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset); 719 } 720 } 721 722 // Pre-calculate the constants section size. This is required for PC-relative addressing. 723 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code)); 724 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) { 725 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code)); 726 } 727 _constants_size = data_section()->length(); 728 729 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code)); 730 731 #ifndef PRODUCT 732 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code)); 733 #endif 734 735 _next_call_type = INVOKE_INVALID; 736 737 _has_wide_vector = false; 738 739 oop arch = TargetDescription::arch(target); 740 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch)); 741 } 742 743 int CodeInstaller::estimate_stubs_size(TRAPS) { 744 // Estimate the number of static and aot call stubs that might be emitted. 745 int static_call_stubs = 0; 746 int aot_call_stubs = 0; 747 int trampoline_stubs = 0; 748 objArrayOop sites = this->sites(); 749 for (int i = 0; i < sites->length(); i++) { 750 oop site = sites->obj_at(i); 751 if (site != NULL) { 752 if (site->is_a(site_Mark::klass())) { 753 oop id_obj = site_Mark::id(site); 754 if (id_obj != NULL) { 755 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) { 756 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name()); 757 } 758 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT)); 759 switch (id) { 760 case INVOKEINTERFACE: 761 case INVOKEVIRTUAL: 762 trampoline_stubs++; 763 break; 764 case INVOKESTATIC: 765 case INVOKESPECIAL: 766 static_call_stubs++; 767 trampoline_stubs++; 768 break; 769 default: 770 break; 771 } 772 } 773 } 774 #if INCLUDE_AOT 775 if (UseAOT && site->is_a(site_Call::klass())) { 776 oop target = site_Call::target(site); 777 InstanceKlass* target_klass = InstanceKlass::cast(target->klass()); 778 if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) { 779 // Add far aot trampolines. 780 aot_call_stubs++; 781 } 782 } 783 #endif 784 } 785 } 786 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size(); 787 size += trampoline_stubs * CompiledStaticCall::to_trampoline_stub_size(); 788 #if INCLUDE_AOT 789 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size(); 790 #endif 791 return size; 792 } 793 794 // perform data and call relocation on the CodeBuffer 795 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, TRAPS) { 796 HandleMark hm; 797 objArrayHandle sites(THREAD, this->sites()); 798 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo)); 799 800 // Allocate enough space in the stub section for the static call 801 // stubs. Stubs have extra relocs but they are managed by the stub 802 // section itself so they don't need to be accounted for in the 803 // locs_buffer above. 804 int stubs_size = estimate_stubs_size(CHECK_OK); 805 int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment()); 806 807 if (check_size && total_size > JVMCINMethodSizeLimit) { 808 return JVMCIEnv::code_too_large; 809 } 810 811 buffer.initialize(total_size, locs_buffer_size); 812 if (buffer.blob() == NULL) { 813 return JVMCIEnv::cache_full; 814 } 815 buffer.initialize_stubs_size(stubs_size); 816 buffer.initialize_consts_size(_constants_size); 817 818 _debug_recorder = new DebugInformationRecorder(_oop_recorder); 819 _debug_recorder->set_oopmaps(new OopMapSet()); 820 821 buffer.initialize_oop_recorder(_oop_recorder); 822 823 // copy the constant data into the newly created CodeBuffer 824 address end_data = _constants->start() + _constants_size; 825 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size); 826 _constants->set_end(end_data); 827 828 // copy the code into the newly created CodeBuffer 829 address end_pc = _instructions->start() + _code_size; 830 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code"); 831 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size); 832 _instructions->set_end(end_pc); 833 834 for (int i = 0; i < data_section_patches()->length(); i++) { 835 HandleMark hm(THREAD); 836 Handle patch(THREAD, data_section_patches()->obj_at(i)); 837 if (patch.is_null()) { 838 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 839 } 840 Handle reference(THREAD, site_DataPatch::reference(patch)); 841 if (reference.is_null()) { 842 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 843 } 844 if (!reference->is_a(site_ConstantReference::klass())) { 845 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name()); 846 } 847 Handle constant(THREAD, site_ConstantReference::constant(reference)); 848 if (constant.is_null()) { 849 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 850 } 851 address dest = _constants->start() + site_Site::pcOffset(patch); 852 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) { 853 if (HotSpotMetaspaceConstantImpl::compressed(constant)) { 854 #ifdef _LP64 855 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK); 856 #else 857 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode"); 858 #endif 859 } else { 860 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK); 861 } 862 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) { 863 Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant)); 864 jobject value = JNIHandles::make_local(obj()); 865 int oop_index = _oop_recorder->find_index(value); 866 867 if (HotSpotObjectConstantImpl::compressed(constant)) { 868 #ifdef _LP64 869 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const); 870 #else 871 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode"); 872 #endif 873 } else { 874 _constants->relocate(dest, oop_Relocation::spec(oop_index)); 875 } 876 } else { 877 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name()); 878 } 879 } 880 jint last_pc_offset = -1; 881 for (int i = 0; i < sites->length(); i++) { 882 HandleMark hm(THREAD); 883 Handle site(THREAD, sites->obj_at(i)); 884 if (site.is_null()) { 885 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 886 } 887 888 jint pc_offset = site_Site::pcOffset(site); 889 890 if (site->is_a(site_Call::klass())) { 891 TRACE_jvmci_4("call at %i", pc_offset); 892 site_Call(buffer, pc_offset, site, CHECK_OK); 893 } else if (site->is_a(site_Infopoint::klass())) { 894 // three reasons for infopoints denote actual safepoints 895 oop reason = site_Infopoint::reason(site); 896 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) { 897 TRACE_jvmci_4("safepoint at %i", pc_offset); 898 site_Safepoint(buffer, pc_offset, site, CHECK_OK); 899 if (_orig_pc_offset < 0) { 900 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot"); 901 } 902 } else { 903 TRACE_jvmci_4("infopoint at %i", pc_offset); 904 site_Infopoint(buffer, pc_offset, site, CHECK_OK); 905 } 906 } else if (site->is_a(site_DataPatch::klass())) { 907 TRACE_jvmci_4("datapatch at %i", pc_offset); 908 site_DataPatch(buffer, pc_offset, site, CHECK_OK); 909 } else if (site->is_a(site_Mark::klass())) { 910 TRACE_jvmci_4("mark at %i", pc_offset); 911 site_Mark(buffer, pc_offset, site, CHECK_OK); 912 } else if (site->is_a(site_ExceptionHandler::klass())) { 913 TRACE_jvmci_4("exceptionhandler at %i", pc_offset); 914 site_ExceptionHandler(pc_offset, site); 915 } else { 916 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name()); 917 } 918 last_pc_offset = pc_offset; 919 920 JavaThread* thread = JavaThread::current(); 921 if (SafepointMechanism::should_block(thread)) { 922 // this is a hacky way to force a safepoint check but nothing else was jumping out at me. 923 ThreadToNativeFromVM ttnfv(thread); 924 } 925 } 926 927 #ifndef PRODUCT 928 if (comments() != NULL) { 929 for (int i = 0; i < comments()->length(); i++) { 930 oop comment = comments()->obj_at(i); 931 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce"); 932 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment); 933 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment)); 934 buffer.block_comment(offset, text); 935 } 936 } 937 #endif 938 return JVMCIEnv::ok; 939 } 940 941 void CodeInstaller::assumption_NoFinalizableSubclass(Thread* thread, Handle assumption) { 942 Handle receiverType_handle (thread, Assumptions_NoFinalizableSubclass::receiverType(assumption())); 943 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle)); 944 _dependencies->assert_has_no_finalizable_subclasses(receiverType); 945 } 946 947 void CodeInstaller::assumption_ConcreteSubtype(Thread* thread, Handle assumption) { 948 Handle context_handle (thread, Assumptions_ConcreteSubtype::context(assumption())); 949 Handle subtype_handle (thread, Assumptions_ConcreteSubtype::subtype(assumption())); 950 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 951 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle)); 952 953 assert(context->is_abstract(), ""); 954 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype); 955 } 956 957 void CodeInstaller::assumption_LeafType(Thread* thread, Handle assumption) { 958 Handle context_handle (thread, Assumptions_LeafType::context(assumption())); 959 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 960 961 _dependencies->assert_leaf_type(context); 962 } 963 964 void CodeInstaller::assumption_ConcreteMethod(Thread* thread, Handle assumption) { 965 Handle impl_handle (thread, Assumptions_ConcreteMethod::impl(assumption())); 966 Handle context_handle (thread, Assumptions_ConcreteMethod::context(assumption())); 967 968 methodHandle impl = getMethodFromHotSpotMethod(impl_handle()); 969 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 970 971 _dependencies->assert_unique_concrete_method(context, impl()); 972 } 973 974 void CodeInstaller::assumption_CallSiteTargetValue(Thread* thread, Handle assumption) { 975 Handle callSite(thread, HotSpotObjectConstantImpl::object(Assumptions_CallSiteTargetValue::callSite(assumption()))); 976 Handle methodHandle(thread, HotSpotObjectConstantImpl::object(Assumptions_CallSiteTargetValue::methodHandle(assumption()))); 977 978 _dependencies->assert_call_site_target_value(callSite(), methodHandle()); 979 } 980 981 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) { 982 jint handler_offset = site_ExceptionHandler::handlerPos(exc); 983 984 // Subtable header 985 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0)); 986 987 // Subtable entry 988 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0)); 989 } 990 991 // If deoptimization happens, the interpreter should reexecute these bytecodes. 992 // This function mainly helps the compilers to set up the reexecute bit. 993 static bool bytecode_should_reexecute(Bytecodes::Code code) { 994 switch (code) { 995 case Bytecodes::_invokedynamic: 996 case Bytecodes::_invokevirtual: 997 case Bytecodes::_invokeinterface: 998 case Bytecodes::_invokespecial: 999 case Bytecodes::_invokestatic: 1000 return false; 1001 default: 1002 return true; 1003 } 1004 return true; 1005 } 1006 1007 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) { 1008 objArrayHandle virtualObjects(THREAD, DebugInfo::virtualObjectMapping(debug_info)); 1009 if (virtualObjects.is_null()) { 1010 return NULL; 1011 } 1012 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL); 1013 // Create the unique ObjectValues 1014 for (int i = 0; i < virtualObjects->length(); i++) { 1015 HandleMark hm(THREAD); 1016 Handle value(THREAD, virtualObjects->obj_at(i)); 1017 int id = VirtualObject::id(value); 1018 Handle type(THREAD, VirtualObject::type(value)); 1019 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type); 1020 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror))); 1021 if (id < 0 || id >= objects->length()) { 1022 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id); 1023 } 1024 if (objects->at(id) != NULL) { 1025 JVMCI_ERROR_NULL("duplicate virtual object id %d", id); 1026 } 1027 objects->at_put(id, sv); 1028 } 1029 // All the values which could be referenced by the VirtualObjects 1030 // exist, so now describe all the VirtualObjects themselves. 1031 for (int i = 0; i < virtualObjects->length(); i++) { 1032 HandleMark hm(THREAD); 1033 Handle value(THREAD, virtualObjects->obj_at(i)); 1034 int id = VirtualObject::id(value); 1035 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL); 1036 } 1037 _debug_recorder->dump_object_pool(objects); 1038 return objects; 1039 } 1040 1041 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, bool return_oop, TRAPS) { 1042 Handle position(THREAD, DebugInfo::bytecodePosition(debug_info)); 1043 if (position.is_null()) { 1044 // Stubs do not record scope info, just oop maps 1045 return; 1046 } 1047 1048 GrowableArray<ScopeValue*>* objectMapping; 1049 if (scope_mode == CodeInstaller::FullFrame) { 1050 objectMapping = record_virtual_objects(debug_info, CHECK); 1051 } else { 1052 objectMapping = NULL; 1053 } 1054 record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, CHECK); 1055 } 1056 1057 int CodeInstaller::map_jvmci_bci(int bci) { 1058 if (bci < 0) { 1059 if (bci == BytecodeFrame::BEFORE_BCI()) { 1060 return BeforeBci; 1061 } else if (bci == BytecodeFrame::AFTER_BCI()) { 1062 return AfterBci; 1063 } else if (bci == BytecodeFrame::UNWIND_BCI()) { 1064 return UnwindBci; 1065 } else if (bci == BytecodeFrame::AFTER_EXCEPTION_BCI()) { 1066 return AfterExceptionBci; 1067 } else if (bci == BytecodeFrame::UNKNOWN_BCI()) { 1068 return UnknownBci; 1069 } else if (bci == BytecodeFrame::INVALID_FRAMESTATE_BCI()) { 1070 return InvalidFrameStateBci; 1071 } 1072 ShouldNotReachHere(); 1073 } 1074 return bci; 1075 } 1076 1077 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, TRAPS) { 1078 Handle frame; 1079 if (scope_mode == CodeInstaller::FullFrame) { 1080 if (!position->is_a(BytecodeFrame::klass())) { 1081 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset); 1082 } 1083 frame = position; 1084 } 1085 Handle caller_frame (THREAD, BytecodePosition::caller(position)); 1086 if (caller_frame.not_null()) { 1087 record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, CHECK); 1088 } 1089 1090 Handle hotspot_method (THREAD, BytecodePosition::method(position)); 1091 Method* method = getMethodFromHotSpotMethod(hotspot_method()); 1092 jint bci = map_jvmci_bci(BytecodePosition::bci(position)); 1093 1094 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string()); 1095 1096 bool reexecute = false; 1097 if (frame.not_null()) { 1098 if (bci < 0) { 1099 reexecute = false; 1100 } else { 1101 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci)); 1102 reexecute = bytecode_should_reexecute(code); 1103 if (frame.not_null()) { 1104 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE); 1105 } 1106 } 1107 } 1108 1109 DebugToken* locals_token = NULL; 1110 DebugToken* expressions_token = NULL; 1111 DebugToken* monitors_token = NULL; 1112 bool throw_exception = false; 1113 1114 if (frame.not_null()) { 1115 jint local_count = BytecodeFrame::numLocals(frame); 1116 jint expression_count = BytecodeFrame::numStack(frame); 1117 jint monitor_count = BytecodeFrame::numLocks(frame); 1118 objArrayHandle values(THREAD, BytecodeFrame::values(frame)); 1119 objArrayHandle slotKinds(THREAD, BytecodeFrame::slotKinds(frame)); 1120 1121 if (values.is_null() || slotKinds.is_null()) { 1122 THROW(vmSymbols::java_lang_NullPointerException()); 1123 } 1124 if (local_count + expression_count + monitor_count != values->length()) { 1125 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count); 1126 } 1127 if (local_count + expression_count != slotKinds->length()) { 1128 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count); 1129 } 1130 1131 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL; 1132 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL; 1133 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL; 1134 1135 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length()); 1136 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count); 1137 1138 for (jint i = 0; i < values->length(); i++) { 1139 HandleMark hm(THREAD); 1140 ScopeValue* second = NULL; 1141 Handle value(THREAD, values->obj_at(i)); 1142 if (i < local_count) { 1143 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK); 1144 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK); 1145 if (second != NULL) { 1146 locals->append(second); 1147 } 1148 locals->append(first); 1149 } else if (i < local_count + expression_count) { 1150 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK); 1151 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK); 1152 if (second != NULL) { 1153 expressions->append(second); 1154 } 1155 expressions->append(first); 1156 } else { 1157 MonitorValue *monitor = get_monitor_value(value, objects, CHECK); 1158 monitors->append(monitor); 1159 } 1160 if (second != NULL) { 1161 i++; 1162 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) { 1163 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL"); 1164 } 1165 } 1166 } 1167 1168 locals_token = _debug_recorder->create_scope_values(locals); 1169 expressions_token = _debug_recorder->create_scope_values(expressions); 1170 monitors_token = _debug_recorder->create_monitor_values(monitors); 1171 1172 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE; 1173 } 1174 1175 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop, false, 1176 locals_token, expressions_token, monitors_token); 1177 } 1178 1179 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1180 Handle debug_info (THREAD, site_Infopoint::debugInfo(site)); 1181 if (debug_info.is_null()) { 1182 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset); 1183 } 1184 1185 // address instruction = _instructions->start() + pc_offset; 1186 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start(); 1187 OopMap *map = create_oop_map(debug_info, CHECK); 1188 _debug_recorder->add_safepoint(pc_offset, map); 1189 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK); 1190 _debug_recorder->end_safepoint(pc_offset); 1191 } 1192 1193 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1194 Handle debug_info (THREAD, site_Infopoint::debugInfo(site)); 1195 if (debug_info.is_null()) { 1196 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset); 1197 } 1198 1199 // We'd like to check that pc_offset is greater than the 1200 // last pc recorded with _debug_recorder (raising an exception if not) 1201 // but DebugInformationRecorder doesn't have sufficient public API. 1202 1203 _debug_recorder->add_non_safepoint(pc_offset); 1204 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK); 1205 _debug_recorder->end_non_safepoint(pc_offset); 1206 } 1207 1208 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1209 Handle target(THREAD, site_Call::target(site)); 1210 InstanceKlass* target_klass = InstanceKlass::cast(target->klass()); 1211 1212 Handle hotspot_method; // JavaMethod 1213 Handle foreign_call; 1214 1215 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) { 1216 foreign_call = target; 1217 } else { 1218 hotspot_method = target; 1219 } 1220 1221 Handle debug_info (THREAD, site_Call::debugInfo(site)); 1222 1223 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type"); 1224 1225 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset); 1226 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK); 1227 1228 if (debug_info.not_null()) { 1229 OopMap *map = create_oop_map(debug_info, CHECK); 1230 _debug_recorder->add_safepoint(next_pc_offset, map); 1231 1232 bool return_oop = hotspot_method.not_null() && getMethodFromHotSpotMethod(hotspot_method())->may_return_oop(); 1233 1234 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, CHECK); 1235 } 1236 1237 if (foreign_call.not_null()) { 1238 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call); 1239 if (_immutable_pic_compilation) { 1240 // Use fake short distance during PIC compilation. 1241 foreign_call_destination = (jlong)(_instructions->start() + pc_offset); 1242 } 1243 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK); 1244 } else { // method != NULL 1245 if (debug_info.is_null()) { 1246 JVMCI_ERROR("debug info expected at call at %i", pc_offset); 1247 } 1248 1249 TRACE_jvmci_3("method call"); 1250 CodeInstaller::pd_relocate_JavaMethod(buffer, hotspot_method, pc_offset, CHECK); 1251 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) { 1252 // Need a static call stub for transitions from compiled to interpreted. 1253 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset); 1254 } 1255 #if INCLUDE_AOT 1256 // Trampoline to far aot code. 1257 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset); 1258 #endif 1259 } 1260 1261 _next_call_type = INVOKE_INVALID; 1262 1263 if (debug_info.not_null()) { 1264 _debug_recorder->end_safepoint(next_pc_offset); 1265 } 1266 } 1267 1268 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1269 Handle reference(THREAD, site_DataPatch::reference(site)); 1270 if (reference.is_null()) { 1271 THROW(vmSymbols::java_lang_NullPointerException()); 1272 } else if (reference->is_a(site_ConstantReference::klass())) { 1273 Handle constant(THREAD, site_ConstantReference::constant(reference)); 1274 if (constant.is_null()) { 1275 THROW(vmSymbols::java_lang_NullPointerException()); 1276 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) { 1277 if (!_immutable_pic_compilation) { 1278 // Do not patch during PIC compilation. 1279 pd_patch_OopConstant(pc_offset, constant, CHECK); 1280 } 1281 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) { 1282 if (!_immutable_pic_compilation) { 1283 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK); 1284 } 1285 #if INCLUDE_AOT 1286 } else if (constant->is_a(HotSpotSentinelConstant::klass())) { 1287 if (!_immutable_pic_compilation) { 1288 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name()); 1289 } 1290 #endif 1291 } else { 1292 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name()); 1293 } 1294 } else if (reference->is_a(site_DataSectionReference::klass())) { 1295 int data_offset = site_DataSectionReference::offset(reference); 1296 if (0 <= data_offset && data_offset < _constants_size) { 1297 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK); 1298 } else { 1299 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size); 1300 } 1301 } else { 1302 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name()); 1303 } 1304 } 1305 1306 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1307 Handle id_obj (THREAD, site_Mark::id(site)); 1308 1309 if (id_obj.not_null()) { 1310 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) { 1311 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name()); 1312 } 1313 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT)); 1314 1315 address pc = _instructions->start() + pc_offset; 1316 1317 switch (id) { 1318 case UNVERIFIED_ENTRY: 1319 _offsets.set_value(CodeOffsets::Entry, pc_offset); 1320 break; 1321 case VERIFIED_ENTRY: 1322 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset); 1323 break; 1324 case OSR_ENTRY: 1325 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset); 1326 break; 1327 case EXCEPTION_HANDLER_ENTRY: 1328 _offsets.set_value(CodeOffsets::Exceptions, pc_offset); 1329 break; 1330 case DEOPT_HANDLER_ENTRY: 1331 _offsets.set_value(CodeOffsets::Deopt, pc_offset); 1332 break; 1333 case INVOKEVIRTUAL: 1334 case INVOKEINTERFACE: 1335 case INLINE_INVOKE: 1336 case INVOKESTATIC: 1337 case INVOKESPECIAL: 1338 _next_call_type = (MarkId) id; 1339 _invoke_mark_pc = pc; 1340 break; 1341 case POLL_NEAR: 1342 case POLL_FAR: 1343 case POLL_RETURN_NEAR: 1344 case POLL_RETURN_FAR: 1345 pd_relocate_poll(pc, id, CHECK); 1346 break; 1347 case CARD_TABLE_SHIFT: 1348 case CARD_TABLE_ADDRESS: 1349 case HEAP_TOP_ADDRESS: 1350 case HEAP_END_ADDRESS: 1351 case NARROW_KLASS_BASE_ADDRESS: 1352 case NARROW_OOP_BASE_ADDRESS: 1353 case CRC_TABLE_ADDRESS: 1354 case LOG_OF_HEAP_REGION_GRAIN_BYTES: 1355 case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED: 1356 break; 1357 default: 1358 JVMCI_ERROR("invalid mark id: %d", id); 1359 break; 1360 } 1361 } 1362 }